*{margin: 0;padding: 0;}
ol,ul,li{list-style: none;}
html,body{
    width: 100%;
    height: 100%;
}
img{
    width: 100%;
    height: 100%;
    display: block;
}
.clear::after{
    content:"";
    display: block;
    clear: both;

}
input,button{
    border: none;
    outline: none;
}
.contant{
    width: 1200px;
    /* height: 50px; */
    /* background-color: white; */
    margin: 0 auto;
}
.clearFix::before,
.clearFix::after {
  width: 0;
  height: 0;
  display: block;
  content: '';
  clear: both;
}
